1, I use the English version. If it is the Chinese version, you can also refer to it. Open the origin, enter your own data, select the data to draw, and then click Draw-Line-Line.

2. The picture made directly in this way may be rough, and it needs to be smooth at this time. Click "Analysis"-"Signal Processing"-"Smoothing"-"Open Dialog Box ..." to open the "Smoothing Options" dialog box.

3. When you confirm that the preview effect meets your requirements, click OK, and you can see a smooth curve. The data of the smooth dotted line can be viewed in the initial workbook, and the software will automatically add the data of the smooth curve in the last column.

4. When you finish the curve smoothing function once, the smoothing function will automatically appear in the "Analysis" drop-down option, so it will be easier to find it when you use this function again.

5. In addition, in the "Analysis" option, there are many functions of the system, including mathematical operation function and fitting function. It is not difficult to study the usage of each function.